RK
Ansys Employee

Hello, 


Please refer to the Fluent user guide, section 9.1.3.1 for single phase and 9.1.3.2 for multi phase. 


https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v201/en/flu_ug/flu_ug_sec_ug_uds_setup.html


Regards,


Rahul